Clamp.



A. J. HEROLD.

CLAMP.

APPLICATION FlLED FEB. 9. 191a.

- Patented July 9, 1 918.

2 SHEETS-SHEET l 6H0 z we go m: NoRms an: no Pnom rm) wAsHlncmN, u c.

a piece of work.

ANTHONY J. HER L'D, or OMAHA, NEBRASKA.

oL'AMP.

Specification 'of Letters Patent.

Patented J lily 9, 19 18..

Application filed February 9, 1918. Serial No. 216,263.

To all whom it may concern: Be it known that I, ANTHONY 'J. HEROLD, citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain useful Improvements in Clamps, of which the fol lowing is a specification, reference being had therein to the accompanying drawing.

This invention has reference generally to improvements in that class of inventions known as wood working, and more particu larly relates to a clamp. 7

As the primary aim and object, the present invention contemplates the provision of a clamp, the sections of which are adapted to be adjustable with respect to each other, manually adjustable means being provided for holding the sections of the clamp in various positions of adjustment.

It is an equally important object of this invention to provide an improved movable jaw on one of the sections with which cooperates the novel manually operable ad jnstin'g means for moving thej'aw into ongagemen't with a piece of work subseqnent toadjustment with the sections of the clamp.

More particularly, the pre'sent invention embraces the provision of resiliently actuated pawls in the handle forming "a part of the adjusting means for cooperation with the teeth on the sleeve adjusting nut.

As a further improvemenh the invention enibraces the'provis'ion of improved means for governing the action of *the pawls to consequently permit of the jaw being adjusted towarda piece ofwo'rk or away from More specific objects of this inventionconsists of the provision of improved retaining,

means {for preventing accidental disengagement of the sectlons; improved means for preventing accidental disengagement of the keeper forming aparto'f the-means for holding the sections in a relatively adjustable position; to provide means for readily 'c'Onv necting the block which adjustably supports the-movable jaw to wed the bracket arms on one of the sections ofthe clam Among the other aims and objects of this invention ma be recited the provision of a device of this character with a view'to comi pactn'ess, in which the number of parts are few, the construction simple,"'the' cost of'production low and the efficiency high.

Other objects as well as the natural characteristic -feaimfrles and scope off-this invert tion will be more readily apparent from the following description taken in connection with the accompanying drawings and pointed out in the claims forming a part of this specification.

The invention is clearly illustrated in the accompanying drawings, in which Figure 1 is a side elevation thereof;

Fig. 2 is a front elevation of the invention;

Fig. 3 is an enlarged vertical section'taken through the adjustable jaw;

Fig. 4 is a horizontal section taken on line 44 of Fig. 3;

Fig. 5 is an enlarged transverse section taken through the means for holding the sections in a relatively adjustable position;

Fig. '6 is a perspective of one of the sections of the clamp;

Fig. 7 is a perspective detail of the means for holding the sections in adjusted position.

Fig. 8 is a section taken on line 8-8 of Fig. 3 in a direction in which the arrows point. t

Fig. 9 is a fragmentary rear elevational detail of one of the sections.

Similar characters of reference are employed in all of the above described views, to indicate corresponding parts.

Referring now, more particularly, to the accompanying drawings, there is provided a clamp, consisting of a channel-shaped section 1 and a'relatively flat-section-2, 'preferably rectangular in cross section, the latter being slidably received in the channel-shaped section 1. A bracket arm 3 is formedon the outer end of the channel-shaped section while a rigid jaw 4 is rigidly connected to theouterend of the bracket arm. Another bracket arm 5 is formed on the outer end of the section 2 and is longer than the arm 3 while adjustably mounted on this arm for coeperation with the j awl is a movable aw 6 swiveled to a threaded shank 7.

WVith a view toward providing improved means for adjustably connectingthe movable jaw to the bracket arm 5 a block -8 is carried by the outer face of the'arm and is provided with a longitudinally extending threaded bore 9 for adjustably accommodat- I intersects the bore and 'adjustably mounted on the shank and positioned'within the he cess-is'as1eeve -nut 1 1 providedon its outer V periphery with a plurality of uniformly spaced teeth 12. A handle is now employed and consists of complementary sections13, the outer ends of which are semi-circular 1n opposite sides of the sleeve nut 11 and being engageable with the teeth 12. Suitable resilient means such as a coiled expansion spring 17 has its respective ends secured to the inner ends o f'the pawls for consequently normally holding the engaging ends thereof in engagement with the teetln In order to hold either one of thepawls out of engagement with the teeth, a governor band 18 is partially rotatably mounted on the outer;

ends of the sections and has the inner edge thereof provided With a recess 19, the ends of which constitute shoulders 20 while the inner periphery of the band is preferably beveled toward the respective ends of the shoulders 20 so that the wide 'portion may ride freely over the inner end of either of the pawls and act against the tension of the spring so as to hold one of the pawls out of engagement with the teeth 12 and when in such position allow the other pawl to be moved through the recess by the spring and thus be held in engagement with the teeth. The shoulders 20 are preferably arranged at diametrical points and it will be appreciated that by rotating the band 18 in the reverse direction, the pawl that is in engagement will be removed from engagement with the teeth, while the pawl that washeld out of engagement will be allowed to engage the teeth, and of course byswinging the handle from side to side, the shank will be adjusted istepbystep to consequently move the jaw other at this point, the ring being held in be formed in'one piece. This would obviate position by means of fastening devices 26. Another fastening device- 27 is extended transversely through the semi-circular sections adjacentthe disks to hold them in the employment of the retaining means or the-fastening devices".

The preferred means for rigidly connectmg-sthe-bloclrfi to thearme consists n pro- ,viding the outer face of the arm with a recess 28, thetransverse wall of which serves as a shoulder andin which recess is seated, a plate 29 desirably of a rectangular configuration. The adjacent face of the block is alsoprovided with a recess 30 which forms a shoulder 31 and seated within this recess is another plate 32 which is secured to the block by suitable fastening devices 33 while the outer end thereof is bent and secured to the outer faceofthearm by meansof suitable fastening devices 34L Fastening devices 35 also extend from the inner wall of the recess 10 in the block through the arm.- By the arrangement of this connecting means, the strain imposed on the block and the bracket arm is equalized throughout the entire adjacent surfaces of these parts. If desired, the block may be cast with the arm. For the purpose of adjustably connecting the sections for removably holding them in relatively adjusted positions, the section 2 is provided with a plurality of transversely extending openings 36 arranged at suitable distances with respect to each other and adaptedv for registrationwith certain of the opposed transverse openings 37 in the sides of the channel-shaped section 1. The intermediate portion of the channel-shaped" section is also provided with a plurality of rectangular openings 38 and engageable in any one of the openings 38 is arlug 39 formed upon the body of the adjacent section 2 which is slidably received between the sides of section, 1. The sides of the channelshaped'sec'tion lrare provided on their outer surface adjacent their free edges with 0p posed longitudinal grooves 40 while disposed about ,thechannel-shaped section is a channel-shaped slide 41. ,Opposed longitus dinal ribs 42 are formed on the inner-surface of the slide ll and are slidably engageable with the grooves 40 which serve to guide the slidingmovementof the slide. The sidesof the slide are now .provided with opposed openings 43 adapted for registration with certain: of the alined openings 36 and. 37 p in the sections 2, and 1. The intermediate por tion ofzthe slide is provided with a transverse slot 4 1 which is in alinementwith the j I openings 43 while-the edges'of the slot adj acent the bottom thereof are provided with opposed grooves Slidably' mounted in the grooves and slot and in the openings 43- is improved retaining means for-holding the sections infa relatively adjustable position and is indicated inits entirety by the numeral 46, 31111111 the present instance consists of a body 47 from theinner face of which extends a keeper: pin 48 whichis re-g movably ,engageable with the alined, open-, ings 36 and 37f and 43 inthe. section-Si andin the slide.= guidearm 19fextends from the lowerendofthe body at approximately rightv angles thereto and is engageable with the slot 44. Flanges 50 extend from the opextended across the slot and is connected at itsends to the intermediate portion of the slide, and cooperating therewith is a stop 5:2 rigidly connected to the outer end of the arm for preventing accidental displacement of the means which removably holds the sec tions in their relatively adjusted position.

Cooperating with the means for holding the sections in arelatively adjusted position is the improved,maintaining means which serve to prevent accidental disengagement of the retaining means when they are fully extended- In reducing this feature of the invention to practice, a U-shaped plate 53 is secured to the inner end of the channelshaped section 1. Side arms of the plate extend beyond the free edges of the sides of the channehshaped section and terminate in opposed eyes 54 in which is removably mounted a bolt 55 held in an operative position by means of a nut 56.. I

The mode. of operation of the present invention may be reviewed as follows: I

. In adjustably connectingthe' sections in a pre-determined position a section 2 is slid in the section 1 a certain distance whereupon the lug 39 is engaged in one of the openings 38 so as tofaline certain of the openings 36 and 37. The slide is now adjusted so that the openings 43 thereof aline with the registered openings 36 and 37 whereupon the keeper pin 48 is engaged therein, the arm 49 serving to guide the pin during movement. The sections being'now'arranged in their properly adjusted position are arranged adjacent a piece of work, not shown, so that the stationary jaw 4 engages one side of the work. To guide the movable aw the governor band is adjusted to withhold one of the pawls from engagement with the teeth 12 am to allow the opposite pawl to be yieldingly held in engagement with one of the teeth by means of the spring 17 The handle is swung back and forth so that the adjacent sleeve nut will move the movable jaw upwardly until it comes into engagement with the opposite side of a piece of work.

It is thought in view of the foregoing description that a further detail description of the mode of operation of the invention is entirely unnecessary. Likewise, it is thought that the advantage of the invention will be readily understood. At this point, however, it may be mentioned that, if desired, cushions may be placed on the outer face of the jaws to prevent marring of the work, especially when a piece of furniture is to be clamped.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention couldbe made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not-in a limited sense. It is also to be understood that the language used in the following claims is intended to cover all the generic and specific features of the invention herein described and all statements of the scope of the invention, which, as a matter of language might be said to fall therebetween.

Having thus described this invention, what is claimed as new and desired 'to be secured by Letters-Patent, is:

1. A device of the character described including a pair of sections one of which is slidably receivable within the other, each of the sections being provided with a plurality of openings adapted for alinement with each other, a slide adjustably mounted on the outer section, retaining means operably mounted on the slide and engageable with certain alined openings in the sections for'removably holding the sections in relatively adjusted position, a stationary jaww formed on one end of one section, and a movable jaw adjustably mounted on the other section for coiiperating with the stationary jaw. i

2. A device of the character described including a pair of relatively adjustable sections one of which is channel-shaped in cross section while the other is rectangular in cross section and is slidably received within the channel-shaped section, both of the sections being provided with transverse openings for alinement with each other at times, the channel-shaped section being provided on its outer surface with o posed grooves, a channel-shaped slide disposed about the channel-shaped section, ribs on the inner surface of the slide slidably engaging the grooves, the sides of the channel-shaped slide being provided with opposed openings for registration with certain alined openings in the sections, a keeper pin slidably mounted on the slide for removably engaging the slide and the sections, means for preventing accidental disengagement of the keeper pin from the slide, a rigid jaw formed on one of the sections and an adjustable jaw mounted on the other section for cooperating with the rigid jaw.

3. A device of the character described including a pair of sections one of which is channel-shaped in cross section while the other is rectangular in cross section for slidable engagement with the channel-shaped section, the channel-shaped section being provided near its sides with opposed openings and in its intermediate portion with other openings, the rectangular-shaped section being provided with openings for registration with certain of the opposed open ings, a lug on the rectangular-shaped section for engaging one of the openings in the intermediate portion to hold certain of the openings in the sides of the channel shaped section in alinement with certain of the'openings in the rectangular-shaped section, the outer surface of the sides of the channel-shaped section being provided with opposed longitudinal grooves, a channelshaped slide disposed about the channelshaped section, rlbs on the inner surface of the sides of the slide for engagement with the grooves, and a keeper pin adjustably mounted 011 the slide for engagement with the alined openings in the sections for removably holding the sections in adjusted position.

4. A device of the character described including a pair of sections one of which is slotted while the sides thereof are provided with opposed openings, a retaining member including a body, a keeper pin projecting from the body for engagementwith the alined openings in the sections, an arm engageable in the slot for guiding the sliding movement of the keeper, a clip carried by the slide, a stop carried by the arm for 00- operating with the clip for preventing accidental displacement of the retaining member, means on the channel-shaped section for cooperating with the keeper in preventing accidental dlseng'agement of the sec- Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

tions, a rigid aw formed on one of the sec! tions and an adjustable jaw mounted on the other section for cooperating with the rigid jaw.

5. A device of the character described including a pair of relatively adjustable sections, means for removably holding the' 'sec tions in various p'ositions of adjustment, a

bracket arm extending from one of the sections, a rigid jaw formed on the'bracket arm, another bracket arm extending from the other section and longer than the fir-Se longitudinal ibor'e, a threaded shank; ad

justably mounted in the bore, another jaw swiveled on the outer end of the shank and disposed opposite to the rigid-jaw, an ad j usting sleeve nut mounted on the shank and positioned within the recess, a plurality of teeth formed on the periphery of the nut, a handle, spaced disks formed on the in ner end of the handle and provided with'openings for partial rotary movement about the nut upon the opposite sides of the teeth, opposed pawls pivotally mounted between the disks, an expansion spring between the outer ends of the pawls for normally holding the inner ends thereof in yielding engagement with the disks, and a governor band partially rotatable mounted on the handle for alternately holding either one of the pawls out of engagement with the teeth so that when thehandle is swung the free pawl will adjust the shank to consequently adjust the j aw;

In testimony whereof I ANTHONY J. HERoLn 1 Washington, D. C. V I

flix my signature. 

